SYSTEMS AND METHODS FOR DYNAMIC ASSOCIATION ORDERING BASED ON SERVICE DIFFERENTIATION IN WIRELESS LOCAL AREA NETWORKS
Embodiments relate to systems and methods for dynamic association ordering based on service differentiation in wireless local area networks. A WiFi™ or other access point can broadcast beacon information to surrounding stations, and receive probe requests from those stations seeking to associate with the access point. The access point can determine a classification for each station, depending on station attributes such as subscription status, handoff status, or others. Stations receiving a higher classification can enter the association process sooner than those with lower classifications. The association order can be managed by inserting a delay in the probe response, by broadcasting the classifications which will be processed in the next beacon interval, or by adjusting the order in which association steps will be performed. Stations having higher classifications can be associated more quickly than lower-classification stations, in contrast to conventional association techniques which handle probe requests in the order received.
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The present teachings relate to systems and methods for dynamic association ordering based on service differentiation in wireless local area networks, and more particularly, to platforms and techniques for prioritizing the association between a wireless station and an access point based on attributes of the requesting station.
BACKGROUNDIn WiFi™ and other wireless local area networks (WLANs), a conventional arrangement for the association of a smart phone, computer, or other wireless device to a wireless router or other access point is to configure the access point to listen for all approaching stations wishing to associate themselves with the access point, and process those association requests in the order in which they are received
However, this approach in known WiFi™ can entail some drawbacks. Those drawbacks include the fact that a first-in, first-out (FIFO) model for association requests takes no account of the relative priority of the subscribers or their data traffic. Thus, for instance, in a busy public network environment such as an airport, a user who initiates an association transaction to access a relatively low-priority data service may obtain a successful association with an access point, simply because that user's device was detected before a user having higher-priority service needs. This can be the case even if the time of initial contact between one station or device and the access point differs from the following station or device by only a moment. For instance, a user attempting to access an email account may have their association request serviced before that of a user who is in the middle of a streaming video download, even though interruption of a video or other media download may create greater disruption for that user than for the email user, simply because the email user's device generated a probe request before the video user, if only by a moment.
It may be desirable to provide methods and systems for dynamic association ordering based on service differentiation in wireless local area networks, in which the association event between a station and an access point can be prioritized and ordered according to the nature, priority, or importance of the service needs of the various users approaching or competing for wireless connections, based on a set of prioritization criteria designed to allow the highest-priority users to acquire a network connection at the soonest possible time.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present teachings and together with the description, serve to explain the principles of the present teachings. In the figures:
Embodiments of the present teachings relate to systems and methods for dynamic association ordering based on service differentiation in wireless local area networks. More particularly, embodiments relate to platforms and techniques for incorporating hardware, software, logic, and/or other resources in the access points and/or other platforms or nodes of a wireless local area network to allow the access points to carry out the association process between themselves and stations requesting association with those access points on a dynamically re-ordered basis, prioritizing the stations based on their service classification, hardware configuration, and/or other attributes. Stations having greater need for faster completion of the association process to the access point or points, such as stations receiving high-priority media, can therefore be scheduled for a quicker attachment to the access point, and begin to receive data access from the access point or points sooner than stations having less urgent or highly prioritized data or service needs.
Reference will now be made in detail to exemplary embodiments of the present teachings, which are illustrated in the accompanying drawings. Where possible the same reference numbers will be used throughout the drawings to refer to the same or like parts.
At various times, and as likewise shown in
In aspects, the access point 106 can generate, access, and/or maintain station classification data 114 with which to assign a set of dynamic priority information 116 to one or more stations in the set of stations 102. In aspects, the access point 106 can generate, access, and/or maintain the station classification data 114 based on a set of attributes 104 associated with each of the stations in the set of stations 102. According to aspects, the set of attributes 104 can comprise several types of data characterizing each station and its configuration, including data related to the subscription status of the station.
For instance, the subscription status of a station can indicate the user identity and subscription level, class, tier, and/or type. The subscription status can include information indicating or identifying subscribed services, plans, payment arrangements, media types, data rates, data download allowances, radio frequency bands, and/or quality of service (QoS) levels for which the user of the station has subscribed. In implementations, the subscription status can likewise or instead comprise service features such as guaranteed or minimum uptime levels, failover services, data redundancy features, and/or other plans, levels, or services. In implementations, for further instance, a user's subscription plan to a broadband wireless data service or other service may be classified into levels such as levels designated as bronze, silver, gold, and/or platinum levels of service. It will be appreciated, however, that other types, numbers, and/or designations for different service tiers can be used. In aspects, different tiers or designations can be applied or identified by the service provider to which the user has subscribed, and/or can be generated or identified by other entities, such as an online service provider, which may be accessed to retrieve some or all of the set of attributes 104 for instance by the access point 106. In aspects, the set of attributes 104 can also comprise data regarding the hardware and/or software configuration of a station, including the number of antennas, power and/or SNR rating, WiFi™ version, other software or service versions, and/or other attributes of the hardware, software, and/or service resources of the station.
According to aspects, the set of attributes 104 can likewise comprise data related to the proximity, location, speed, direction, and/or other geospatial variables related to the station and/or the access point 106. In implementations, the position, proximity, and/or other information can be derived from global positioning system (GPS) data that may be generated in the smart phone and/or other station device, but can also be derived from cellular geographic assignments, cellular triangulation, and/or other geospatial techniques or services.
In aspects, the set of attributes 104 can also include data related to the handover or handoff status of the station, as it approaches or reaches the range of the one or more radio channels 112 of the access point 106. That is, for stations in the set of stations 102 which are transitioning or about to transition from a cellular or other wireless wide area network (WWAN) to the wireless local area network (WLAN) supported by the access point 106, data may be collected from the station or about the station indicating that the station device currently has a WWAN data link that will be transitioned to a WLAN link via the access point 106. In cases, stations which are anticipating a handover event may be afforded a higher priority than stations which are not requesting a handoff, or which have no active data link via WWAN channels.
According to aspects, in general the access point 106 can generate and/or update the set of dynamic priority information 116 by accessing, receiving, generate, analyzing, and/or otherwise manipulating or operating on the station classification data 114 using the set of prioritization criteria 108. In aspects, the set of prioritization criteria 108 can be or include a set of rules, tests, thresholds, computations, and/or other logic to assign or weight the priority of each station in the set of stations 102 for purposes of carrying out the association process between the station and the access point 106. In aspects, the set of prioritization criteria 108 can be adjustable and/or updateable, and can assign higher priority based on one or more attributes reflected in the set of attributes 104 of a station, independently or in combination with other attributes. In implementations, the set of dynamic priority information 116 can be encoded in a scale or range, for instance, a scale or rating of 1 to 10, with a rating of 1 being the highest available priority rating. In such instances or others, a station whose user has subscribed to the highest or premium type of service may be assigned a high value in the set of dynamic priority information 116, for instance 1 or 2, while a user who has subscribed to a basic set of data services can be assigned a relatively lower priority rank, such as 6 or 7. In aspects, a station which is located in close proximity to the access point 106 can be assigned a relatively higher priority rating than a station which is comparatively distance, while as noted a station which is requesting or experiencing a data link handover event may likewise be assigned a high priority rating, such as 1 or 2 on a scale of 10. In implementations, various attributes or factors can be combined for each station, to generate an aggregate or final priority rating, such as by multiplying ratings for multiple attributes together. It will be appreciated however that various rating, scaling, and/or combination techniques or computations can be used to generate the set of dynamic priority information 116. In aspects, the set of dynamic priority information 116 can be or include a list of all stations in the set of stations 102 in order of their priority rank, but other formats for the set of dynamic priority information 116 and/or associated data can be used. Upon generation of the set of dynamic priority information 116, the access point 106 and/or other platform, device, logic, and/or service can alter or adjust the timing or ordering of the association process between the set of stations 102 and the access point 106, to create a dynamic, out-of-turn, and/or otherwise differentiated sequence or timing for the association or attachment of each station in the set of stations 102 to the access point 106.
In implementations, the association process used to connect or attach each station to the access point 106 can follow the flow diagram shown in
In implementations, and as for instance shown in
According to aspects, and as for example shown in
In implementations, and as for example illustrated in
In implementations, in addition to or instead of the preceding techniques for dynamically differentiation and/or ordering the association of the stations in the set of stations 102, the access point 106 can manage the ordering or sequencing of station associations by controlling a set of beacon information broadcast by the access point 106. In aspects as shown, in 502, processing can begin. In 504, the access point 106 can determine an association policy for requesting stations in the set of stations 102, based on the station classification 114 for those stations. In aspects, the association policy can record or encode those classes of station which will receive highest priority for association purposes, and which will be permitted to initiate the association process with the access point 106 during the following beacon interval. The association policy can also indicate those classes of stations having lower priority. The association policy can be encoded to be broadcast to the set of stations 102 within the set of beacon information transmitted by the access point 106, on a regular or other basis. In 506, the access point 106 can generate a frequency for one or more station classes to be allowed to initiate an association in the set of beacon information broadcast by the access point 106 over the one or more radio channels 112. For instance, classes of stations which are of the highest priority may be identified in each beacon broadcast as being permitted to initiate an association transaction within each following beacon interval, while stations of lower classification may be identified only in every fifth or tenth beacon broadcast. Other frequencies can be used. In 512, the access point 106 can process and/or associate the stations permitted to proceed with an association transaction based on the association policy, the broadcast association policy, and/or other data, as appropriate. In 514, processing can repeat, return to a prior processing point, jump to a further processing point, or end.
The foregoing description is illustrative, and variations in configuration and implementation may occur to persons skilled in the art. For example, while implementations have been described in which a single access point 106 interacts with the set of stations 102, in implementations, two or more access points can interact with the set of stations 102 and dynamically order the association process for one or more stations. Similarly, while implementations have been described in which the access point 106 may employ one technique or parameter to adjust the sequencing of the association process, in other implementations, multiple techniques or parameters can be used. Other resources described as singular or integrated can in embodiments be plural or distributed, and resources described as multiple or distributed can in embodiments be combined. The scope of the present teachings is accordingly intended to be limited only by the following claims.
Claims
1. A method of associating a station with an access point, comprising:
- initiating a request for an association transaction between the station and the access point;
- determining a set of attributes associated with the station;
- accessing a set of prioritization criteria for use by the access point;
- comparing the set of attributes associated with the station with the set of prioritization criteria to determine a station priority for the station; and
- scheduling an association transaction for the station based on the station priority.
2. The method of claim 1, wherein the initiating a request for an association transaction comprises initiating the request by the station.
3. The method of claim 1, wherein the initiating a request for an association transaction comprises initiating the request by the access point.
4. The method of claim 1, wherein the request for an association transaction comprises a probe request.
5. The method of claim 1, wherein the request for an association transaction comprises an authentication request.
6. The method of claim 1, wherein the request for an association transaction comprises an association request.
7. The method of claim 1, wherein the request for an association transaction comprises a beacon transmission.
8. The method of claim 1, wherein the scheduling the association transaction comprises scheduling a probe response based on the station priority.
9. The method of claim 1, wherein the scheduling the association transaction comprises scheduling an authentication response based on the station priority.
10. The method of claim 1, wherein the scheduling the association transaction comprises scheduling an association response based on the station priority.
11. The method of claim 1, wherein the set of attributes comprises at least one of:
- a subscription status of the station;
- a set of station configuration data for the station;
- a proximity of the station to the access point; or
- a handoff status of the station.
12. The method of claim 11, wherein the set of attributes comprises a subscription status of the station, and the subscription status comprises at least one of—
- a subscription tier,
- a quality of service tier,
- a data rate tier,
- a data allowance tier, or
- a minimum uptime tier.
13. A system, comprising:
- a wireless interface between a station and an access point; and
- a processor, communicating with the station via the network interface, the processor being configured to— initiate a request for an association transaction between the station and the access point, determine a set of attributes associated with the station, access a set of prioritization criteria for use by the access point, compare the set of attributes associated with the station with the set of prioritization criteria to determine a station priority for the station, and schedule an association transaction for the station based on the station priority.
14. The system of claim 13, wherein the initiating a request for an association transaction comprises initiating the request by the station.
15. The system of claim 13, wherein the initiating a request for an association transaction comprises initiating the request by the access point.
16. The system of claim 13, wherein the request for an association transaction comprises a probe request.
17. The system of claim 13, wherein the request for an association transaction comprises an authentication request.
18. The system of claim 13, wherein the request for an association transaction comprises an association request.
19. The system of claim 13, wherein the request for an association transaction comprises a beacon transmission.
20. The system of claim 13, wherein the scheduling the association transaction comprises scheduling a probe response based on the station priority.
21. The system of claim 13, wherein the scheduling the association transaction comprises scheduling an authentication response based on the station priority.
22. The system of claim 13, wherein the scheduling the association transaction comprises scheduling an association response based on the station priority.
23. The system of claim 13, wherein the set of attributes comprises at least one of:
- a subscription status for the station;
- a set of station configuration data for the station;
- a proximity of the station to the access point; or
- a handoff status of the station.
24. The system of claim 23, wherein the set of attributes comprises a subscription status of the station, and the subscription status comprises at least one of—
- a subscription tier,
- a quality of service tier,
- a data rate tier,
- a data allowance tier, or
- a minimum uptime tier.
25. A system, comprising:
- wireless interface means between station means and access point means; and
- processor means, communicating with the station means via the network interface means, the processor means being configured to— initiate a request for an association transaction between the station means and the access point means, determine a set of attributes associated with the station means, access a set of prioritization criteria for use by the access point means, compare the set of attributes associated with the station means with the set of prioritization criteria to determine a station priority for the station means, and schedule an association transaction for the station means based on the station priority.
26. The system of claim 25, wherein the initiating a request for an association transaction comprises initiating the request by the station means.
27. The system of claim 25, wherein the initiating a request for an association transaction comprises initiating the request by the access point means.
28. The system of claim 25, wherein the request for an association transaction comprises a probe request.
29. The system of claim 25, wherein the request for an association transaction comprises an authentication request.
30. The system of claim 25, wherein the request for an association transaction comprises an association request.
31. The system of claim 25, wherein the request for an association transaction comprises a beacon transmission.
32. The system of claim 25, wherein the scheduling the association transaction comprises scheduling a probe response based on the station priority.
33. The system of claim 25, wherein the scheduling the association transaction comprises scheduling an authentication response based on the station priority.
34. The system of claim 25, wherein the scheduling the association transaction comprises scheduling an association response based on the station priority.
35. The system of claim 25, wherein the set of attributes comprises at least one of:
- a subscription identifier for the station means;
- a set of station configuration data for the station means;
- a proximity of the station means to the access point means; or
- a handoff status of the station means.
36. The system of claim 35, wherein the set of attributes comprises a subscription status of the station, and the subscription status comprises at least one of—
- a subscription tier,
- a quality of service tier,
- a data rate tier,
- a data allowance tier, or
- a minimum uptime tier.
37. A computer program product, comprising:
- computer-readable medium comprising: at least one instruction for causing a computer to initiate a request for an association transaction between the station and the access point; at least one instruction for causing a computer to determine a set of attributes associated with the station; at least one instruction for causing a computer to access a set of prioritization criteria for use by the access point; at least one instruction for causing a computer to compare the set of attributes associated with the station with the set of prioritization criteria to determine a station priority for the station; and at least one instruction for causing a computer to schedule an association transaction for the station based on the station priority.
38. The computer program product of claim 37, wherein the initiating a request for an association transaction comprises initiating the request by the station.
39. The computer program product of claim 37, wherein the initiating a request for an association transaction comprises initiating the request by the access point.
40. The computer program product of claim 37, wherein the request for an association transaction comprises a probe request.
41. The computer program product of claim 37, wherein the request for an association transaction comprises an authentication request.
42. The computer program product of claim 37, wherein the request for an association transaction comprises an association request.
43. The computer program product of claim 37, wherein the request for an association transaction comprises a beacon transmission.
44. The computer program product of claim 37, wherein the scheduling the association transaction comprises scheduling a probe response based on the station priority.
45. The computer program product of claim 37, wherein the scheduling the association transaction comprises scheduling an authentication response based on the station priority.
46. The computer program product of claim 37, wherein the scheduling the association transaction comprises scheduling an association response based on the station priority.
47. The computer program product of claim 37, wherein the set of attributes comprises at least one of:
- a subscription identifier for the station;
- a set of station configuration data for the station;
- a proximity of the station to the access point; or
- a handoff status of the station.
48. The computer program product of claim 47, wherein the set of attributes comprises a subscription status of the station, and the subscription status comprises at least one of—
- a subscription tier,
- a quality of service tier,
- a data rate tier,
- a data allowance tier, or
- a minimum uptime tier.
Type: Application
Filed: Aug 30, 2012
Publication Date: Mar 6, 2014
Patent Grant number: 9155101
Applicant: QUALCOMM Incorporated (San Diego, CA)
Inventors: Santosh Paul Abraham (San Diego, CA), George Cherian (San Diego, CA)
Application Number: 13/600,088
International Classification: H04W 72/10 (20060101);